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Prior to March 1999, R-410A refrigerant cylinders had a dip
tube. These cylinders should be kept upright for equipment
charging. Post March 1999 cylinders do not have a dip
tube and should be inverted to ensure liquid charging of the
equipment.
• Do not install a suction line lter drier in the liquid line.
• A liquid line lter drier is standard on every unit.
• Desiccant (drying agent) must be compatible for POE oils
and R-410A.
3. Thermostatic Expansion Valve (TXV)
The Bi-Flow TXV is specifically designed to operate with
R-410A heat pumps. Replacement of the TXV should only
be made with the factory specied bi-ow R-410A valve.
Do not use an R-22 TXV.
4. Tools Required For Installing & Servicing R-410A Models
Manifold Sets:
-Up to 800 PSIG High side
-Up to 250 PSIG Low Side
-550 PSIG Low Side Retard
Manifold Hoses:
-Service Pressure Rating of 800 PSIG
Recovery Cylinders:
-400 PSIG Pressure Rating
-Dept. of Transportation 4BA400 or BW400
!
R-410A systems operate at higher pressures than R-22 sys-
tems. Do not use R-22 service equipment or components on
R-410A equipment.
CAUTION
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